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Abstract
An articulated covered wagon design was developed. The wagon feature is that the body-bearing elements are made of circular pipes. This technical solution made it possible to reduce the tare weight of the wagon while ensuring the strength conditions. Mathematical simulation of the dynamic loading of the developed articulated covered wagon design was carried out under the main operating conditions. In the calculations of the observed quantities, an application of symmetry with regard to the longitudinal axis of the wagon was used. The accelerations, as the components of the dynamic load acting on the wagon, were determined. The dynamic loading computer simulation results of the developed wagon design are also presented. The strength analysis of the articulated covered wagon supporting structure made it possible to conclude that the strength indexes were within the allowed limits. The wagon bearing structure was analyzed for fatigue strength. The weld strength analysis results of the most loaded part of the wagon-bearing structure are presented. The results obtained for the desired quantities revealed their symmetrical distribution in the wagon structure. This research will contribute to improving the efficiency of railway transport operation.
Highlights
Articulated wagons are used to increase the volume of freights transported by rail
To determine the strength reserves of a typical bearing structure of a covered wagon, a 3D model was built in the SolidWorks Simulation software package (Vélizy-Villacoublay, France)
To increase the volume of cargo transportation, an articulated wagon was developed on the basis of the proposed covered wagon design (Figure 4)
Summary
Articulated wagons are used to increase the volume of freights transported by rail. A feature of such wagons is that their design consists of two sections, which are supported on three bogies. The sections interact with each other through an articulated coupling. The variety of articulated wagons is very large [1], which is due to a number of advantages over other types: . Savings in manufacturing costs; Reduction of vertical loading on a frame; Savings in cargo transportation, especially for long-haul traffic; Reduction of required wagon fleet; Decrease in the cost of the wagon life cycle, etc. The main distinguishing features of articulated wagons are their design, method of loading, types of bogies, articulated coupling, etc. The articulated parts of the frame and the wagon are symmetrical about the center bogie axis
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